Stationary shapes of axisymmetric vesicles beyond lowest-energy configurations

We conduct a systematic exploration of the energy landscape of vesicle morphologies within the framework of the Helfrich model. Vesicle shapes are determined by minimizing the elastic energy subject to constraints of constant area and volume. The results show that pressurized vesicles can adopt high...

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Published inSoft matter Vol. 2; no. 1; pp. 2258 - 2271
Main Authors Reboucas, Rodrigo B, Faizi, Hammad A, Miksis, Michael J, Vlahovska, Petia M
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 06.03.2024
Subjects
Configurations
Electric fields
Energy
External pressure
Internal pressure
Vesicles
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Summary:We conduct a systematic exploration of the energy landscape of vesicle morphologies within the framework of the Helfrich model. Vesicle shapes are determined by minimizing the elastic energy subject to constraints of constant area and volume. The results show that pressurized vesicles can adopt higher-energy spindle-like configurations that require the action of point forces at the poles. If the internal pressure is lower than the external one, multilobed shapes are predicted. We utilize our results to rationalize experimentally observed spindle shapes of giant vesicles in a uniform AC electric field. We conduct a systematic exploration of the energy landscape of vesicle morphologies within the framework of the Helfrich model.
Bibliography:Electronic supplementary information (ESI) available. See DOI
https://doi.org/10.1039/d3sm01463k
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Present address: The Dow Chemical Company, Midland, MI 48611, USA.
Present address: Department of Chemical Engineering, University of Illinois Chicago, Chicago, IL 60608, USA.
ISSN:1744-683X
1744-6848
1744-6848
DOI:10.1039/d3sm01463k